Boiler



M. E. SMlTH- Oct. 25, 1927.

BOILER Filed Feb. 12, 1925 Patented Oct. 25, 1927 UNITED sures ea ue PATENT e orrcs MARK E. SMITH, or" ERIE, PENNSYLVANIA, Assrenon TONION IRON wonKs, oF

ERIE, PENNSYLVANIA, A COEPORATION OF PENNSYLVANIA.

BOILER.

i Application filed February 12, 1925. Serial No. 8,699.

This invention relates to a type of boiler having one drum superimposed directly over another drum. Ordinarily such drums have been permanently attached together `;t'ormmg a single unit. The present invention lS directed to making this connection detachahle so that the hoilers may be more readly handled and more readily installed in place. Other features and details of the invention will appear from 'the specification and claims.

The invention is illustrated in the accompanying drawings as followsz- Fig. l shows a side elevation of the boiler.

Fig. 2 a section on the line 2-2 in Fig l. Fig. 3 a plan view of the connection between the drums.

The boiler is shown in itsusual setting for the turnace 1. A lower drum 2 is considerably shorter than the upper drum and is arranged directly back ofthe furnace.

i It is provided with flues 3 leading directly from the turnace to a smoke chamber 4 at the rear ofthe 'urnace' An upper drum 5 is provided with flues 6 leading 'from the chamber ell'orwardly to smoke box 7 and the smoke box is stack opening 8. e

A ring 9 is shaped to contorm to the outer surfaces of the shells at points between the shells and the shells are provided with open'- ings 10, the openings in the two shells being in register and surrounded by the rmgs 9. Rods 11' extend through the rings, these rods having heads 12 whichrare arranged in sockets 13 in the upper faces of the rings. The rods extend through the lower shell and are secured by riveting at 14. The 'upper ends ot' the rods extend through the shell of the upper drum and through ring 'segments 16. Nuts 17 are arranged on the upper ends of the rods; and these exert sufiicient pressuro on the shell to secure the joint between the shell and the ring 9. Preferably there are two of the rings between the two shells. These parts are shipped detached and handled detached so that they can be more readily handled and put 'in places difiicult of access. i

After the part s are in place the final attachment is made by the operator entering through the usual man-hole 18 for accom plishing the setting of the rings 16 'and provided with the usual the clamping nuts 17. Gaskets or caulking sheets 15 are arranged between the rings 9 and the surfaces of the shells. This makes a very economical setting and a very economical type of boiler and with its detachable sections makes it convenient to ship and possible to use it in places where it would be impossible with-the unit structure of boiler.

hat- I claim as new is 1. In fa boiler, the combination of a lower drum; an upper drum, the upperdrum having an opening. in register With an opening in the lower drum; a ring between the drums surrounding the openings, said rings having perforations With sockets leading to the per- 'Jorations from one face ot' the ring; rods extending through the perforations and the shells of the drums, said rods having shoulders arranged in the sockets; and means securing the rods to the shells, said means within one of the shells drawing the shoulders into clamping engagement with the bottoms of the sockets.

2. In a boiler, the combination of a lower drum; an upper' drum, said drums having opposing openings; a ring arranged between the drum-s and having a wall surrounding said openings,'said ring making a fluid tight closure contact with the surfaces of the` drums forming a nipple connectionbetween the drums, said drums and nipple having registering openings extending through the walls of the ring and the drums; and securing means extending through said registering openings and having heads within the i shells. V

3; In a boiler, the combination of a lower drum, an* upper drum, said drums having opposing openings; a ring between the drums, the walls of the ring forming a fluid tight joint with the walls of the drums around the openings and forming a nipple connection between the-drums, said ring and drums having registering openings ing through theiwalls of the ring and the drums, and rods securing the ring to one of the drums and detachably securing the opposing drum to the ring.

4. ?In a boiler, the combination of a lower extenddrum; an upper drum, said drums having tight joint with the alls of the drums around the openings and forning a nipple connection between the drums, said rng and drums having regstering openngs extendingthroughthe walls of the ring and the drums; and l'ods engaging the ring and being headed over within one of the drums permanentiy securng the ring to one of the MARK E. SMITH. 

